CirCarLife <4.3 - Improper Authentication

mediumseverity

5.3CVSS score

24.6%likelihood of exploitation, next 30 days

98%of all CVEs are less likely

Readycheck to confirm it

CirCarLife before 4.3 is susceptible to improper authentication. A PLC status disclosure exists due to lack of authentication for /html/devstat.html. An attacker can obtain sensitive information, modify data, and/or execute unauthorized operations.

Impact

Unauthenticated attackers can obtain sensitive PLC status information without authentication due to improper access controls, potentially revealing critical industrial control system details.

Fix

Upgrade CirCarLife to version 4.3 or higher to fix the improper authentication issue.

How to confirm it

Send: GET {{BaseURL}}/services/user/values.xml?var=STATUS
Positive when: contains in header "CirCarLife Scada" AND contains "<values><variable><id>" and "Reader.STATUS"

Run it with nuclei: nuclei -id CVE-2018-16670 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2018-16670

info:
  name: CirCarLife <4.3 - Improper Authentication
  author: geeknik
  severity: medium
  description: CirCarLife before 4.3 is susceptible to improper authentication. A PLC status disclosure exists due to lack of authentication for /html/devstat.html. An attacker can obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    Unauthenticated attackers can obtain sensitive PLC status information without authentication due to improper access controls, potentially revealing critical industrial control system details.
  remediation: |
    Upgrade CirCarLife to version 4.3 or higher to fix the improper authentication issue.
  reference:
    - https://www.exploit-db.com/exploits/45384
    - https://github.com/SadFud/Exploits/tree/master/Real%20World/Suites/cir-pwn-life
    - https://www.exploit-db.com/exploits/45384/
    - https://nvd.nist.gov/vuln/detail/CVE-2018-16670
    - https://github.com/20142995/sectool
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2018-16670
    cwe-id: CWE-287
    epss-score: 0.24568
    epss-percentile: 0.97897
    cpe: cpe:2.3:a:circontrol:circarlife_scada:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: circontrol
    product: circarlife_scada
  tags: cve,cve2018,scada,plc,iot,disclosure,edb,circarlife,circontrol,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/services/user/values.xml?var=STATUS"

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "CirCarLife Scada"

      - type: word
        part: body
        words:
          - "<values><variable><id>"
          - "Reader.STATUS"
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from